Vehicle brake mechanism



1945. w. SIMPKINS ET AL 2,369,259

VEHICLE BRAKE MECHANISM Filed Aug. a, 1943 4 SheetsSheet 1 237786 S/MP/f/NS AND EUGENE/Q. M1 5 ON Z'mnentors 8g (WJK Gttomeg 1945. w. SIMPKINS E1- AL 2,369,259

VEHICLE BRAKE MECHANISM .ZTYHHC SIMP/f/NS Smnentors Feb. 13, 1945. wfsnvlPKms ETAL VEHICLE BRAKE MECHANISM Sheets-Sheet 3 Filed Aug 6, 1945 Ihwentors Bu WV attorney 1945- 1. w. SIMPKINS ET AL 2,369,259

VEHICLE BRAKE MECHAN I SM Filed Aug. 6, 1943 4 5neets-$heet 4 AND \n 0054/5 Q A/E'LSOA/ Patented Feb. 13, 1945 VEHIQLE BRAKE MECHANISM Isaac Simpkins and Eugene R. Nelson,

, 7 Charlotte, N C.

Application August 6,1943QSerialNoL 497,586

teams. (01. 188-205) This invention relates to brake mechanism and more especially to means for mounting a brake mechanism on an automotive vehicle such as a truck, in such a manner that diiferent sizes and widths of .brake shoes may be installed on a truck and the like without the diflicultfwelding operation.

' It is an object of'this invention to provide means for mounting a braking mechanism on an axle of an; automotivevehic'le, such as a truck necessity [of a and the like so that'jthe position of the braking mechanism maybe adjusted longitudinally of the axle whenit is desired to install a braking mechanism havingbrake blocks, brake drums, and brake bands of'a' size differentfrom that Heretofore, it has been found that in certain automotivevehicles such as trucks, trailers, buses, and the like, where they come equipped with a certain width of brake drum on the wheel and a corresponding width of brake shoe, that the braking effect produced by such equipment is not sufiicient for very heavy loads, and it has been the practice heretofore when it is desired to mount a broader or deeper brake drum on the wheel and supply the vehicle with broader brake shoes to cutthe flange 1 I from its axle by a blow' torch orother suitable means, and move it back further on the axle to the right in Figure 2, and

with which the vehicle comes'equipped from the factory.

It'is another object of this invention toprovide means for adjustably mounting a braking mechanism'on an automotive vehicle so that the braking mechanism can be adjusted longitudinally of the axle without remodeling and rewelding portions of the axle holding flange I mounted thereon.

1 Some of the objects of the invention having been stated, other objects will appear as the description proceeds, when takenin connection with the aocompanying'drawings, in which:

Figure 1 is a side elevation, of the improved brake supporting mechanism looking from the outer end of the axle inwardly towards the vehicle; I t

Figure 2 is a vertical sectional view taken along the line 2-2 in Figure 1, and looking in'the direction'of the arrows,'and showing a portion of a brake drum in addition, and showing bolts I2 instead'of rivets IZa; c

' Figure 3 is a top plan view of the braking mechanism mounted on a vehicle axle housing and showingthe brakefshoe mechanism removed;

Figure 4 is an enlarged detail showing a modified form of the invention;

Figure-5 is an elevation of a wheel equipped with our'invention and lookingat the left hand side of Figure'6;

Figure 6 is a vertical sectional View the line 6- 6 in Figurefi. a

Referring more specifically to the drawings, the numeral 10 indicates a conventional rear axle housing of a'vehicle, and also indicatesa taken along trailer or tractor axle. On the conventional'axle,"

there is provided integral therewith a circular outstanding flange member H which is provided with a plurality of holes in which bolts or rivets 12a are mounted, the flange II and bolts l2 heretofore being employed for mounting a braking mechanism which has pivot bolts at one end for pivotally mounting the brake shoes and spreading cam means at the other end for spreading the brake shoes for applying the brakes.

there reweld the flange H in position, so as to move thebraking mechanism further inwardly towards the vehicle so that it can center inside the brake drum so that broader brake shoes wheninstalled will be operated equally to apply equal braking effect on all portions of the drum. This is a very tedious operation, and requires great skill and much labor in rewelding the flange II in a perfectly true position.

'It is a purpose of this invention to provide means associated with the conventional flange II on an axle whereby the braking mechanism can be mounted on thisflange without removing the flange from the axle and readjusting the same and providing means whereby the braking mechanism can be adjusted longitudinally of the axis.

In the embodiment of the invention shown, there has-been provided an annular member'l5 which is secured to the conventional flange II by the conventional bolts 12 or rivets Ila.

center thereof of any desired size to properly fit the axle, and the holes in the annular member can be drilled to correspond to theholes in the flange ll already on the axle. T is annular member l5 has its periphery threadedfpreferably with a very fine thread, say for example, sixteen threads to the inch, and threadably mounted on this annular member 15 is a member l6. By rotating the member 5 on the annular member l5, the longitudinal position of the member l6 can be adjusted on the axle.

' If desired, the annular members I5 and I6 can have smooth adjoining surfaces as shown in Figures 4 and 6, so the member IBcan be slid longitudinally of, the axle and then welded in proper position. v

The member I6 has projecting from one side thereof a portion ll which is providedwith a pair of pins I8 and l9 on which conventional brake'shoes 20 and 2! are pivotally mounted.

This annular member can have a hole through the ong 'm emb'ei'r l", sandiwh en th'e member 1-6" adb j usted' to the proper longitudinal position on the v 'Ihebrakeshoeslll andZ I b left-handendsin Figure l, and fiton opposite 7 sides of the .prQJ'BctionLin which the pins [8 1 employed f r holding the pi 3 t'ion in'theprojeiction ITIL,

rollers and pins are conventional. These rollers are adapted at all times to press against a cam:

i been set forth a preferred embodiment of the member 24 which is integral with a shaft 28 rotatably mounted in a projection 29 extending from the aopposite endkof the annular member Hi from which the projection I! extends.

By conventional means, not shown, the shaft I 28 may be oscillated or partially rotated to change the position of cam 24 to sprea-d'the 'free' ends of brake shoes 20 and 2| apart from each v r other topress the brake bands '22 and 23 against the inside surface of a conventional brake drum 32 disposed on the Wheel with, which this 'brakf the brake shoes 2 iland 2| are normally pressed invention,'and although specific terms are employed, they are used in a generic and descriptive sensezonlyandanotfor pul 86s of; limitation, the

scopev of "the invention" being-defined in the claims. e "I claim:

1. 'In a :vehicle having an axle with avwheel rotatably mounted thereon, said wheel having a brake drumsecured thereto; said axle having a -peripheral flange integral therewith, an annular 7 member rigidly secured to the flange, a brake shoe supporting member slidably mounted on 1 H agaihstthe cam Zkbymeans of a tension spring,

not shownpwhich has its ends attached to pins SJJ' and on the brake shoes 2.0 and 2| respeetively. v Q s p 1 Theannularmember I5 is preferably cutaway 1 y as; at 3 3' andalso the annular member I5 is cut 1 away as at 34 to;provide room for swinging movem nt-pf h zcamfi- V. v. v I It -1Q f ble= a i e 9, mou t the n i 1 member 1.5 on ;the conventional flange I I, and then-with the annular nemberlfi in positionion I he an ul me- 115, th a nu ar m mbe 1 Hiis rotateda sufiicientnumber of timesto cause i its longitudinalposition tob e in 'a proper place on the axle to properly support the braking m q a ism a d; t t-cent r w th. res Q- h j umr thewheel- Whenihemw is I justed in proper position, the annular members I 1 and Jfi-ar s ure to e her ma non-t n 1 position by anysuitable meanssuch as 'by weld- 1 ing-the two parts together atseveralpointsalong 1 their coinciding ;-periphe rie s.

and i9 are mpunted Suitable set screws 36 are .In ste dof having the peripheryl of theiannular f member I5 ,vthr eaded (and the inside surface of the fshoeisuppbrting member ijt threaded, these jwojsur'fa'ces'"canlbe mane ,smdothas shown in I are .roik'edat their the annular member for adjustment longitudinallyiofhthe axle and adapted to be fixed to the flange when .in properly adjusted pbsiti'on, :and a pair eoflexpansiblebrake eshoes'gsecured o'nssa'id shoe supporting member for 'engagemen't'with said.brake.drum.

2.lIni.a vehicle" having an..ax1eand wheels 1 rotatably mounted on thejaxle, and being ,pro-

,vided withbrake' drumslsaid axle having a ne- 7 riplieral flange integral .itherewith, an annular member surrounding the axlev and .ren'iovably .se-

' cured to said flange}. a' brake vshoe supporting member ,threadably mounted on thedperiphery of said cannularTmember ffor adjus'trhenti longitudinally of.".-,tl1e ax eby rotation of the brake shoe supporting member tolproperly' position the brake I shoes relative t the ibrakefdrum."

3.1m a "vehicle having an, axle with wheels rotatablymounted on eachend of the axle; said axle near its ends having aconventional -brake assembly supporting flange, an annular member l surrounding sai'dfl'ax'le and bein ,bolteditothe flange, the periphery of the annular ,inmberflba ing threaded, .a brake. shoe supporting member,

having a'threaded' bore therethrougheand .tl'ireadb and 19in posi- Figures ifa'riu' ewiii'eh' showsjiri u e 21in "modif ed 1 form, solthatQmember' i6 will have a sliding fit I axle, the members [.5 and i5 can bewelded mgether to not only hold the member IB'in its i proper ,position' longitudinally of the axle, but 1 tofcause'the brake'applyin g shaft 28' and cam alsoflto hold the member 16 fin proper position I 24 to be in registering D Osition with the braking 3 mechanism of'ithe' vehicle.

Insteadof using tens zasshtwri in Figures 2 "and' l, rivets" l'2a can be employed as shown in Figural for securing the annu lar member 15 l the brake drum 32'lo'y means. of conventional bolts 44; Wheel l3has'a conventional rim il5 thereon i for-receiving a pn'eumaticcasin'g,

partjdfja {10 which 7 1 i'srotata'bl'y mountedon,theaxlehousing i0 and ably .mounted the annular member so thatrelative rotation between!Jth annular. member and the brake" shoe supporting. member willmbve the brake shoe supporting .member' longitudinally of the axle, and means, for'securing the annular memberand the brakels'hoe supporting .member against rotation relativepto each other.'.

4.' Avehicle brake mechanismfin which 'thevehicle isprovided with ,an axle, wheels rottatakilymounted en the axle; and bein provided with brake drums, said axle havinga peripheral ,iiang e' thereon; van annular member secured on said flange, a brake shoesupportingmechanismv havinga .hole therethrough into "which the annular member is adapted tovfit,lso vthat the brakejshoe supporting mechanism can be slid} longitudinally off the axle on said. annularmember and welded in' proper position by welding: the brake shoe supporting mechanism to the periphery qofllthe annular member. v i

5. In'an automotive axle housings-adapted {to have a wheel rotatably mountedflthereon and having a peripheral flangfilihteg'ral with thetex terior surface of the housing; an annular :member fixedlylmounted on the flange, Ja 'brakeishoesupporting mechanism surroundmg the annular member and movable. IongitudihaHyJthereQf and adapted 'to' .be fixedly and permanently secured to the ,fiange when adjusted longitudinally .of the I 'axleehousing' 'to..,the desired position. 7

H ISAAC '.SIMPKINS. v

' EUGENE R..NELSQN. 

